baber/WOPTO huggingface dataset:
Patent GB-1037887-A (GB)
Title: Ferromagnetic rare earth compound
IPC: H01F1/053
Filed: 1964-08-04
Abstract: A compound Gd4Sb3 is prepared by mixing gadolinium and antimony together in divided form in stoichiometric proportions, heating say pellets of the mixture to a temperature at which an exothermic reaction proceeds, e.g. 400 DEG  to 500 DEG  C., in a tantalum crucible sealed by a tapered tantalum plug which excludes as much dead-volume as possible and placed in a vacuum or in an oxygen free atmosphere, and cooling the crucible after completion of the reaction. A radio frequency induction coil may be used to heat the crucible, the power input being off during the reaction.
Patent GB-485910-A (GB)
Title: Arrangement for de-icing windows, wind-shields and the like transparent surfaces
IPC: B64D15/16
Filed: 1937-11-16
Abstract: 485,910. Windscreen-cleaners. ORNELLAS, M. L. J. D'. Nov. 16, 1937, No. 31488. [Class 138 (i)] [Also in Group X] The obscurement of windows, vehicle and aircraft windscreens, and like transparent panels, by frozen moisture is prevented by mounting on the exposed surface of the panel, or forming the panel itself from, a sheet of transparent flexible material which is deformed by suitable means to break up any ice formed thereon. In the construction shown in Fig. 1, the sheet of transparent flexible material 1 is secured along two of its opposite edges 4, 5 to the outer surface of a glass panel 2, and a roller 3 placed between the two sheets is reciprocated longitudinally to deform the flexible sheet 1. In the modification shown in Fig. 3, the roller 3 is provided with toothed portions which engage with racks 7 attached to the glass panel 2, and a guide roller 9 is mounted on each side of the roller 3, parallel thereto, to contact with the outer surface of the flexible sheet. This construction may be modified by dispensing with the rigid panel 2, the flexible sheet 1 serving as the window or screen. According to a further modification, the sheet of flexible material is cemented along each of its edges to the rigid window panel, and air, which may be dried, heated, or filtered, is supplied from a reciprocating pump or other pulsating device to the space between the sheets to effect the breaking up of any ice formed on the outer sheet.
Patent GB-875098-A (GB)
Title: Single-lens reflex camera
IPC: G03B19/12
Filed: 1959-09-15
Abstract: 875,098. Phonographic cameras. AGFA A. G. Sept. 15, 1959 [Sept. 26, 1958], No. 31491/59. Class 98(1) A single lens reflex camera includes as a separable unit inserted in a space in the camera housing provided therefor, a mirror box carrying in addition to the mirror and cover flap, the camera lens, the diaphragm and a pivoted blade shutter, and accommodates a spring driven control mechanism for carrying out pre-exposure adjustments of the shutter, diaphragm, mirror and cover flap and for effecting release of the shutter, the whole being so arranged that the functioning of the mechanism included in the unit can be tested while the unit is separate from the camera. As shown, the camera comprises a housing 1, and a detachable mirror box 2 having mounted thereon a shutter 3, a lens 4, and a matt screen lens 8. The spring driven control mechanism includes a crown wheel 17, which is tensioned against loading of a spring 64 when the film is advanced as described below and is held in the tensioned position by the engagement of a lug 57 thereon with a latch portion 52 of a release slide 44. On depression of a body release 7 supported by the camera housing, a lug 47 depresses a projection 45 of the slide 44 until stopped by an abutment 48 rigid with a side wall 41 of the mirror box, and as a result the lug 57 is liberated from the latch 52 and the crown wheel 17 is freed to run down clockwise under its spring loading. During this running down, a pinion 18 is rotated and effects closure in known manner of the shutter blades and setting of the diaphragm to a predetermined aperture value, mirror 9 is pivoted upwards about hinge 10 by way of a lever mechanism 11 controlled by cam 13 rotating with the wheel 17, and the light protection flap 15 is likewise pivoted out of the way by a second cam controlled lever mechanism, shown partly at 14. Near the end of the rotation of wheel 17, extension 59 thereon engages with a lever 55 pivoted at 56, and by way of the pin and slot connections 53, 54 and 49, 50 respectively, the slide 44 is depressed and the shutter release pin 50 is actuated. The members 7 and 44 return to their initial positions under spring loading. When the film is again advanced by means of a quick feed lever (not shown), gear 23 is rotated in the direction of arrow 34, pin 27 thereon engages with pin 26 on the gear 19 for tensioning of the control mechanism, and said pin also engages in recess 29 of a pivoted lever 28 for setting of the shutter through slide 30 (which may be mounted either on the mirror box or on the camera housing), setting ring 38 and setting pinion 40. When the mirror box is detached from the camera housing the tensioning of the control mechanism the setting of the shutter mechanism and the depression of the projection 45 may all be effected manually.
Patent GB-419167-A (GB)
Title: Improvements in, and relating to, garden shears, sheep shears, scissors, pruning shears, secateurs and the like cutting tools
IPC: A01G3/02
Filed: 1933-11-11
Abstract: 419,167. Hand shears. HIND, B., 18, Lawson Road, Sheffield. Nov. 11, 1933, No. 31498. [Class 30.] The blades are prevented from separating at their cutting edges by projections d integral with or riveted or adjustably secured to the shanks b. The parts d may be turned over at the ends at j to prevent complete disengagement. The projection attached to the blade which underlies the other, overlies the other projection.
Patent GB-1408192-A (GB)
Title: Treatment system for exhaust gases from a nuclear plant
IPC: G21F9/02
Filed: 1972-07-05
Abstract: 1408192 Absorbers LICENTIA PATENTVERWALTUNGS GmbH 5 July 1972 [5 July 1971] 31528/72 Heading B1L Nuclear power installation exhaust gases, comprising krypton and xenin nitrogen and oxygen leaves the after-cooler 5 and is fed to the gas-cooling and drying plant 7. This gas is fed to a preliminary absorber 7 and a main absorber 8 before discharge through vacuum apparatus 9 to the exhaust chimney. The preliminary absorber 7 described more fully in relation to Fig. 3 (not shown) represents the smaller part of the absorption plant and serves for the decay of the short-lived fission products with high heat and daughter product precipitation as well as simultaneous filtration of daughter solid. The absorber described more fully is relative to Fig. 2 (not shown) is constructed for ready and safe exchange of absorbent. The main absorber 8 which represents the larger part of the plant serves for the decay of the longer-lived isotopes and the filtration of solid daughter products therefrom. The absorber is constructed for exchange of absorbant if necessary.
Patent GB-387063-A (GB)
Title: Improvements in or relating to collapsible barrels
IPC: G03B17/56
Filed: 1931-11-14
Abstract: 387,063. Hoops for barrels. CHELL, W., 29, Bridgford Road, West Bridgford, Nottinghamshire. Nov. 14, 1931, No. 31544. [Class 21.] The ends of the hoops encircling a collapsable barrel are joined by means of a hook D<1> mounted to slide in a casing E on one end of the hoop by means of a cam F rotated by a spanner &c. engaging a squared head J, and a bar B on the other end of the hoop over which the hook engages. Specification 344,285 is referred to.
Patent GB-744032-A (GB)
Title: An improved web tension controlling means for use in association with printing machines
IPC: B65H23/188
Filed: 1953-12-14
Abstract: 744,032. Feeding webs. HALLEY & SONS, Ltd., J., and HALLEY, A. M. Dec. 13, 1954 [Dec. 14, 1953], No. 31630/53. Class 100 (1). Apparatus for tensioning a web a comprises a tensioning roll e (Fig. 1) bearing upon a portion of the web between two positively driven rolls around which the web passes, the roll e being movable in accordance with the length of the web between the two positively driven rolls to determine the setting of an arm n which in turn determines the rotation of a control disc v (Figs. 4 and.5) for varying the speed of one of the positively driven rolls. The web a passes around a positively driven roll c, under the roll e, around idler rolls f, f<SP>1</SP> to the positively rotated feed rolls of a printing or like machine. The roll e is mounted in bearing blocks g adapted to slide up and down parallel guide tubes h. The blocks g are connected to a chain j. running round sprocket wheels k, k<SP>1</SP> and provided with variable weights j<SP>1</SP>. A pin g<SP>1</SP> on the block g is adapted to co-operate with one or other of a pair of contacts m, m<SP>1</SP> mounted on the arm n which is pivoted at n<SP>1</SP>. The upper end of the arm n operates a switch mechanism o and through a circuit determines the position of the armature of a solenoid p, the armature being linked to a rocker arm r. The roll c is driven from a V- pulley through a V-belt connection which also runs over a variable pulley t formed in two parts t, t<SP>1 </SP>which may be moved axially relative to each other so as to vary the effective diameter of the pulley. The pulley t is driven through a constant speed pulley u. The distance apart of the parts t, t<SP>1</SP> is determined by a rotatable screw threaded disc v which engages an externally threaded portion w<SP>1</SP> of the pulley shaft w. The disc v is adapted to be rotated by the action of a pawl x, oscillated by a lever y from the main machine drive, on ratchet teeth v<SP>2</SP> formed on the disc. The pawl x is controlled by the arm r. In operation, assuming that the roll c is rotating faster than the main machine drive rolls, the roll e on a block g will descend until the pin g<SP>1</SP> actuates the contact ml of the arm n so that the switch o is operated to position the arm r so that the pawl x rotates the disc v in a direction to decrease the effective diameter of the pulley t and thereby also drives the roll c. As the speed of the roll c slows down the roll c will rise until the contact m is actuated and the arm r operated to cause the pawl x to start increasing the effective diameter of the pulley t and thereby speed up the roll c. During operation the roll e continually rises and falls between the contacts m and m<SP>1</SP>.
Patent GB-851712-A (GB)
Title: Improvements in automatic control apparatus
IPC: G05D1/06
Filed: 1956-10-17
Abstract: 851,712. Automatic control systems for aircraft. MINNEAPOLIS-HONEYWELL REGULATOR CO. Oct. 17, 1956 [Oct. 17, 1955], No. 31672/56. Class 38 (4). In a closed loop control system a displacement error signal is combined with a rate signal derived through high and low-pass circuits so that the magnitude of the rate signal varies with frequency. In an aircraft autopilot, Fig. 2, A.C. signals dependent on deviations of pitch from an attitude set by a trim potentiometer 143 are produced by a gyro vertical 30 operating a potentiometer 147. The magnitude of these signals is varied by a potentiometer 150 which is automatically adjusted in dependence on altitude. Added to these signals, through a transformer 48 are signals developed by gyros 65 and 168 operating potentiometers 101 and 161 respectively. The relative magnitudes of the signals from the pitch rate gyros is adjustable by potentiometers 106, 74 and the magnitude of their combined effect is adjustable by a potentiometer 82. The resultant of the pitch attitude and rate signals is applied through a discriminator-amplifier 120 to control a twophase induction motor 155. Follow-up signals are developed by a potentiometer 112 and a generator 180 driven by motor 155. The time constant of the servo-system including motor 155 is set, e.g. automatically in dependence on dynamic air pressure, by adjustment of a potentiometer 191 controlling the magnitude of feedback from generator 180. Motor 155 thus acts as a low-pass integrator of the signals controlling it and signals from potentiometer 112 adjusted by it are added to the signals from the pitch rate gyro 65 and applied through a discriminator amplifier 15 to control a reversible servomotor 16 correcting pitch by adjusting the elevators (not shown). The inclusion of the signals from gyro 65 in the output and input circuits of integrator 155 produces a high-pass effect on the rate signals from gyro 65. Followup signals are developed by a potentiometer 87 driven by servomotor 16 and the magnitude of these signals may be set by potentiometers 94 and 96 the latter of which is automatically adjusted in dependence on the ratio of dynamic to static air pressure. Up-elevator signals during a turn are developed by a potentiometer 131 adjusted by gyro vertical 30 and applied to the input of discriminator-amplifier 120. The magnitude of these signals is varied by a potentiometer 136 automatically adjusted in dependence on altitude.
Patent GB-1016579-A (GB)
Title: Hydrocarbon-formaldehyde resins
Inventor: GREENHOW EDWARD JOSHUA
IPC: C08G10/02
Filed: 1963-08-12
Abstract: Resinous condensation products are obtained by reacting together an aromatic hydrocarbon and formaldehyde in the presence of an alkyl hydrogen sulphate.  The aromatic hydrocarbon may be xylene, naphthalene, an alkyl naphthalene, cumene, durene, 1,2,4-trimethyl-benzene, tetralin, acenapthalene, phen-an-threne or anthracene. The alkyl hydrogen sulphate may be methyl hydrogen sulphate, ethyl hydrogen sulphate, iso-propyl hydrogen sulphate, ethylene di - (hydrogen sulphate) or 2 - hydroxyethyl hydrogen sulphate, and may be produced in situ.  Examples are given.
Patent GB-230910-A (GB)
Title: Improvements in or relating to the manufacture of oxide of iron
IPC: C01G49/06
Filed: 1923-12-18
Abstract: Ferrous hydrate is produced by electrolyzing an alkali or alkaline earth or other neutral salt with an iron anode and a platinized carbon cathode and reacting the ferrous salt and the base either within or outside the cell to obtain the ferrous p  hydrate.  A diaphragm may be employed, and the cathode may be perforated or porous so as to allow of blowing in a gaseous depolarizing agent such as air; or a solid or liquid depolarizing agent may be employed.  The process may be self-exciting, the electrodes being connected outside the cell.  The ferrous hydrate is dried and calcined with the admission of the necessary quantity of oxygen to produce the desired oxide.
Patent GB-1240265-A (GB)
Title: Adjustable seat fixing
Inventor: BABBS FREDERICK WILLIAM
IPC: B60N2/07
Filed: 1967-07-20
Abstract: 1240265 Seats COX OF WATFORD Ltd 3 July 1968 [20 July 1967] 31783/68 Divided out of 1240264 Heading A4J In a fore-and-aft, or other seat adjustment, a U-shaped handle 37 is releasably connected, at its free ends, to pivoted latches 31, which it can turn to move projections 32 downwardly, out of engagement with notches 33. The free ends of the handle are sleeved on to the parts 38 of the latches 31 and retained thereon by wire return springs 39, for maintaining the projections 32 in engagement with the notches 33.
Patent GB-1299624-A (GB)
Title: Flame-resistant shaped articles
IPC: D01F6/08
Filed: 1970-07-01
Abstract: 1299624 Flame retarded polymer blend articles KOHJIN KK 1 July 1970 [29 Jan 1970 3 Feb 1970] 31812/70 Heading C3P Articles such as fibres and films comprise as their principle constituents, a halogen-containing high molecular weight polymer, and a partially acetalized polyvinyl alcohol in a weight ratio of from 2 : 8 to 8 : 2, and from 0À1% to 15% by wt. (based on the total amount of the said principle constituents), of tin substantially in the form of stannic acid. The halogen-containing high molecular weight polymer may be for example, P.V.C., polyvinylidene chloride, polychloroprene, a chlorinated-polypropylene, -polyethylene or -polyvinylchloride, or a graft polymer of vinyl chloride on polyvinylalcohol. This polymer preferably contains at least 20% by wt. of halogen. The polyvinyl alcohol may preferably have a degree of acetalization of up to 60% molar. The article may be made by partially acetalizing a polymer blend article whose principal constituents are a halogencontaining high molecular weight polymer and polyvinyl alcohol, in an acetalization bath containing an aldehyde, an anti-swelling agent a strong inorganic acid, and a tin salt of a strong inorganic acid, and washing the resulting article with water to convert the tin salt to substantially stannic acid. Aldehydes which may be used are, for example, formaldehyde, acetaldehyde, benzaldehyde, furfural or glyoxal. Strong inorganic acids are H 2 SO 4  and HCl; anti-swelling agents are Na 2 SO 4  or (NH 4 ) 2 SO 4 , and the preferred tin salt is stannic chloride. In the examples, formaldehyde is used, and the halogen-containing polymer is P.V.C. with or without polyvinylidene chloride. The article to be acetalized is usually made by polymerizing for example vinyl chloride in aqueous emulsion in the presence of P.V.A., and forming the article (e.g. spinning fibres), from the resulting emulsion.
Patent GB-1500027-A (GB)
Title: 1-thiadiazolylimidazolidinones their preparation and use
IPC: A01N43/78
Filed: 1975-08-01
Abstract: 1500027 Thiadiazolyl-imidazolidinones VELSICOL CHEMICAL CORP 1 Aug 1975 [5 Aug 1974] 32171/75 Heading C2C The invention comprises compounds (I), where R<SP>1</SP> is alkyl, alkenyl, haloalkyl, alkoxy, alkylthio, alkylsulphonyl or alkylsulphinyl and R<SP>2</SP> is alkenyl, haloalkyl, haloalkenyl or where R<SP>3</SP> and R<SP>4</SP> are hydrogen or alkyl, their preparation by heating an acetal (II), when R<SP>5</SP> is alkyl in a dilute acidic aqueous medium, herbicidal compositions comprising the compounds (I) and an inert carrier and a process for controlling weeds comprising contacting the weeds with the said compounds (I) or the said compositions. Dialkyl acetals (II) may be made by reacting a thiadiazole (V) with phosgene and reacting the resulting isocyanate dimer (III) with an acetal R<SP>2</SP>NHCH 2 CH(OR<SP>5</SP>) 2  (IV). The dialkyl acetal (IV) can be made by reacting α-bromoacetaldehyde with an amine R<SP>2</SP>NH 2 .
Patent GB-663507-A (GB)
Title: Improvements in or relating to tube couplings
IPC: F16L19/04
Filed: 1949-12-16
Abstract: 663,507. Pipe joints. POTTS, F. C. (Parker Appliance Co.). Dec. 16, 1949, No. 32286/49. Class 99 (i) In a joint in which a sealing and securing sleeve 16 is deformed at its end 15 by a conical surface 6 in the socket 4 to grip the pipe 2 or is pressed on to the exterior of the flared end of the pipe, Fig. 3 (not shown), the other end of the sleeve has a weakened portion 22 which is deformed to grip the pipe by a conical surface 10 of the coupling nut, which thereafter contacts a non-contractible part 17b of the sleeve. The end of the sleeve has a conical surface interrupted by the weakening groove 18, and of less conicity than the surface 10 on the nut.
Patent GB-1076466-A (GB)
Title: Optical refractors
IPC: G02B3/08
Filed: 1964-08-07
Abstract: 1,076,466. Optical refractors. MINNESOTA MINING & MANUFACTURING CO. Aug. 7, 1964 [Aug. 7, 1963], No. 32296/64. Heading G2J. An optical refractor comprises two Fresnel type lens elements 7, 8 disposed with their ridged surfaces in face-to-face relationship, the crest of at least one ridge of one element being in continuous contact with a slant face of the opposing ridge of the other element whereby the elements are maintained in coaxial alignment. In the embodiment shown, the ridges of each lens element are concentrically arranged, the radially outer slant faces 21, 24 of the ridges being optically active and having a radially inwardly progressively greater inclination to the optical axis so as to form a converging system. As shown, the crests 27 of ridges on the lens element 8 contact the slant faces 21 of the lens element 7 within the optically inactive areas of the system. Further pairs of opposed ridges may be in contact in the following ways:- (a) The crests of ridges on the element 8 engage the crests of ridges on the element 7, (b) the crests of ridges on the element 7 contact the slant faces 24 of the element 8. The optical refractor may be used in an overhead projector.
Patent GB-1369190-A (GB)
Title: Register punch
IPC: B26F1/02
Filed: 1973-07-06
Abstract: 1369190 Punching E SCHUMACHER [trading as KLIMSCH & CO] 6 July 1973 [19 July 1972] 32353/73 Heading B3W [Also in Division B4] A register punch for producing register holes in sheet materials such as paper, photographic films, etching plates and foils, comprises a die 4 mounted in a feed table 3 for co-operation with a punch 23, a positioning means on the feed table for moving the material to align a site mark thereon with an aperture in the die, and a microscope sighting means 7-15 for observing the site -mark through the aperture from beneath the die. The punch 23 may be actuated by an electromagnet 22 or by manual means. The material positioning means includes slides 18 and 21 movable in " Y " and " X " directions respectively, the slides are made from iron coated with chromium so that the material may be held on the slides by means of magnetic plastics strips laid across the material. The slides can be moved by control knobs 2, 16 in order to position a site mark over the die as seen through the microscope. The punch is then actuated to punch a hole; a second hole may then be punched in the material after the first hole has been located on a pin 20.
Patent GB-1195154-A (GB)
Title: Improvements relating to a Waste Heat Boiler comprising a Gas-Heated Heat Exchanger.
Inventor: SANDRI ALFRED
IPC: F22B1/18
Filed: 1968-07-08
Abstract: 1,195,154. Waste gas boilers. WAAGNERBIRO A.G. 8 July, 1968 [24 Aug., 1967], No. 32564/68. Heading F4A. In a waste heat boiler the hot gases entering at 11 flow over evaporator tubes 12 arranged in the space between a steam pipe 23, surrounding the water feed pipe 22, and a wall 4 situated within the pressure vessel wall 1. The wall 4 has an upper movable portion 5 which can be moved towards or away from seats 7, 8, to control the gas flow over the tubes 12, the hot gas escaping through annular space 13 to outlet 3. Tube 22 discharges into a chamber at the bottom of pipe 23 to which the boiler tubes 12 are connected, wet steam being discharged into the pipe 23. Water preheaters 32 may be arranged in the space 13 and a superheater 34 may be situated upstream of the tubes 12, the gas flow over the superheater tubes being controlled by a by-pass valve 38. In a modification, Fig. 3, the feed water is delivered by pipes 22, 47, to chambers 42, 44, the inner tubes 40 of tube bank 12 leading from chamber 42 to steam collector 43 whilst the outer tubes 41 lead from chamber 44 to steam collector 45.
Patent GB-1059261-A (GB)
Title: Rocket propellent compositions
Inventor: SCURLOCK ARCH CHILTON
IPC: C06B33/08
Filed: 1963-08-16
Abstract: A rocket motor solid propellant is formed of an inorganic oxidizer, and a finely divided metal or metal hydrid fuel dispersed in an organic fuel matric in which the oxygen content is a given fraction of a quantity which is a function of the propellant atomic weight and metal valency. The organic fuel matrix may require an external source of oxygen, such as the solid inorganic oxidizer, or may incorporate its own combustion oxygen.  Semi-solid, thixotropic, propellant may also be formed. The higher thrust is obtained, with specified materials, where the given fraction has a value between 0.48 to 0.60. The metal used may be Zr, U, Hf and Th and their hydrides; the organic fuel, e.g. polyether, polysulphide, polyurethanes, cellulose nitrate, nitroglycerine; the inorganic oxidizer, perchlorate, nitrate, peroxide.